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Finding the Fourth Proportional to 3,783, 5,220.54 and 2,211.96

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Solution

The fourth proportional to 3,783, 5,220.54 and 2,211.96 is: 3,052.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783 : 5,220.54 = 2,211.96 : x
  2. Step 2: Convert to fraction form
    3,783/5,220.54 = 2,211.96/x
  3. Step 3: Cross multiply
    3,783x = 5,220.54 × 2,211.96
  4. Step 4: Simplify right side
    3,783x = 11,547,625.66
  5. Step 5: Solve for x
    x = 11,547,625.66/3,783
  6. Step 6: Final answer
    x = 3,052.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.